CN2935612Y - Electric power-assisted steering permanent-magnet brushless DC motor for automobile - Google Patents
Electric power-assisted steering permanent-magnet brushless DC motor for automobile Download PDFInfo
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- CN2935612Y CN2935612Y CN 200620074206 CN200620074206U CN2935612Y CN 2935612 Y CN2935612 Y CN 2935612Y CN 200620074206 CN200620074206 CN 200620074206 CN 200620074206 U CN200620074206 U CN 200620074206U CN 2935612 Y CN2935612 Y CN 2935612Y
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- assisted steering
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Abstract
The utility model relates to a permanent magnetic brushless DC motor used in the electrically-assisted steering system for motor vehicles, belonging to an automobile steering technology. The motor consists of a stator, an end cover, a rotor, a signal magnetic ring and a sensor, with the permanent magnetic of the rotor being obliquely arranged along the axis line at a prescribed angle. Both sides of the permanent magnetic are parallel in transverse direction and symmetrical around the geometrical center; the magnetization direction of the permanent magnetic is parallel to the parallel magnetization of the symmetry axis of the axial section. Moreover, the other provisions include a stator and rotor structure with high slenderness ratio, a misaligned iron-core stator, a non-riveted fixing, an oblique rotor magnetic and parallel side structure, a distributed short-pitch winding and a contactless double-channel, double magnetic ring, hall effect sensor, thereby allowing high working ratio, high velocity ratio, low torque fluctuations of slot harmonics, low torque fluctuations of electromagnetic harmonics and low rotary inertia, which can also meet the requirements of the high-precision EPS brushless electrically-assisted power steering system and create an economical, mobile and comfortable driving and riding experience.
Description
Technical field
The utility model relates to a kind of brushless, permanently excited direct current motor, and especially a kind of automobile electric power-assisted steering brushless, permanently excited direct current motor belongs to motor turning component technology field.
Background technology
In recent years, for economy, dynamic property and the comfortableness that makes automobile is improved, many automobiles have gradually adopted electric boosting steering system (E.P.S), thereby the E.P.S electric boosting steering system is rapidly developed and extensive use.
Understand according to the applicant, universal brushless, permanently excited direct current motor lays particular emphasis on the driven nature index, and the E.P.S controlling indicator is not reached requirement, ubiquity that moment of inertia is big, teeth groove moment and the electromagnetic torque fluctuation is big, merit is than deficiency such as little, that speed ratio is little, can not be directly used in the E.P.S system.
The utility model content
The technical problems to be solved in the utility model is: the deficiency at universal brushless, permanently excited direct current motor exists provides a kind of electromagnetism harmonic wave torque fluctuations low automobile electric power-assisted steering brushless, permanently excited direct current motor---the E.P.S brushless, permanently excited direct current motor.On this basis, this automobile electric power-assisted steering brushless, permanently excited direct current motor should merit than high, speed ratio is high, moment of inertia is low, teeth groove harmonic wave torque fluctuations is low.
Automobile electric power-assisted steering brushless, permanently excited direct current motor of the present utility model by stator, the end cap of fixedlying connected with stator, be supported on the rotor in stator and the end cap, and the signal magnet ring and the position transducer composition that is fixed on the end cap that are fixed on the rotor external part, it is characterized in that: the permanent magnet of described rotor (being commonly called as magnetic shoe) is predetermined oblique angle vertically; The Width two sides of described permanent magnet are parallel to each other, and about its geometric center symmetry; The direction of magnetization of described permanent magnet is the parallel magnetization that is parallel to the axial cross section symmetry axis.Help reducing electromagnetism harmonic wave torque fluctuations like this, improve merit ratio, speed ratio.
During actual the manufacturing, every rotor permanent magnet certain angle that tilts vertically---with 8 °-13.2 ° of the axial angles that same slot pitch distance such as becomes.
Above technical scheme is further improved: stator by stator cage, be fixed on stator core in the stator cage, be wrapped in the stator winding on the stator core, the phase line inserted sheet of being drawn by stator winding constitutes, described stator core segmentation lamination, and tropometer is decided angle in turn, and described meter is decided angle and equaled 360 divided by number of stator slots or 360 and the common divisor of number of stator slots.Like this, can reduce the teeth groove harmonic wave torque fluctuations that iron core magnetic conductance anisotropy causes.
Stator is by core stamping, the segment fault sheet mode, and no rivet arrangement is fixed together, its iron core slot is embedded with winding distributed, the pipe nipple square, dipping lacquer baking back forms.Rotor is stacked by rotating shaft, rotor core punching segment fault sheet, and the rotor core surface is stained with through the oblique magnetic of teeth groove coupling and the permanent magnet of parallel sided, and the non-magnetic conduction aluminium of its outside suit cover is formed.And the rotor draw ratio is greater than 1.Transducer adopts the two magnet ring transducers of binary channels (being specially the two magnet ring hall element sensors of non-contact type binary channels), interior circumpolar logarithm is 1: 6 with the ratio of outer shroud number of pole-pairs, the control precision of brushless electric machine can be improved like this and the torque disturbance that minimizing electric current odd harmonic causes can be coupled with control circuit.The two magnet ring structures of binary channels make this motor the most at a high speed than reaching 6000.
In general, the utility model is by the said structure feature, reach merit than high, speed ratio is high, teeth groove harmonic wave torque fluctuations is low, the technical goal that electromagnetism harmonic wave torque fluctuations is low, moment of inertia is low, can meet the needs of high accuracy E.P.S brushless electric servo steering system, satisfy the requirement of car load economy, mobility, comfortableness.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.Wherein: the 100-field frame assembly; The 100a stator core; The 100b stator winding; 100c phase line inserted sheet; The 100d-stator cage; The 101-stator punching; The 200-rotor assembly; The 200a-rotor core; The 200b-armature spindle; The 200c-rotor permanent magnet; The 201-rotor punching; The 300-electric motor end cap; 400-double-channel signal magnet ring; 500-binary channels position transducer.
Fig. 2 does not have rivet arrangement magnetic effective homogeneity schematic diagram for stator core segment fault sheet, and arrow is equivalent magnetic conductance direction among the figure.
Fig. 3 and Fig. 4 are respectively the silicon steel sheet magnetic conductance direction of Fig. 1 embodiment LA, each section of LB section stator core, and arrow is the magnetic conductance direction among the figure.
Fig. 5 is the rotor cross section structure schematic diagram of Fig. 1 embodiment.Wherein: the 200-rotor assembly; The 200a-rotor core; The 200b-armature spindle; The 200c-rotor permanent magnet; The 201-rotor punching.
Fig. 6 is the oblique magnetic schematic diagram of the rotor permanent magnet of Fig. 1 embodiment.200c1-permanent magnet parallel side.
Fig. 7 is the rotor core segment fault chip architecture magnetic effective homogeneity schematic diagram of Fig. 1 embodiment, and arrow is equivalent magnetic conductance direction among the figure.
Fig. 8 is two magnet ring sensor construction schematic diagrames of Fig. 1 embodiment.Wherein: 400a-double-channel signal magnet ring outer shroud; Ring in the 400b-double-channel signal magnet ring.
Embodiment
Embodiment one
The automobile electric power-assisted steering brushless, permanently excited direct current motor basic structure of present embodiment comprises field frame assembly 100, rotor assembly 200, electric motor end cap 300, double-channel signal magnet ring 400, binary channels position transducer 500 compositions as shown in Figure 1.Field frame assembly 100 is fixedlyed connected with electric motor end cap 300, and rotor assembly 200 is supported in stator former and the end cap, and double-channel signal magnet ring 400 is fixed on rotor assembly 200 external parts, and binary channels position transducer 500 is fixed on the end cap.
As shown in Figure 5, rotor assembly 200 by the rotating shaft 200b by rotor core 200a center, be fixed on rotor core 200a in the rotating shaft, be coated on the outer rotor permanent magnet 200c of rotor core and form.Twin-channel signal disk of rotating shaft 200b axle external part fixed delivery rotor-position.
As shown in Figure 5, rotor permanent magnet 200c is bonded on the rotor core equably.What the present embodiment rotor permanent magnet adopted is that its Width two sides 200c1 is parallel to each other, and these two sides are about its geometric center A symmetry as the permanent magnet of the predetermined angular that tilts vertically of Fig. 6 signal; The direction of magnetization of permanent magnet is the parallel magnetization (direction of arrow among Fig. 5) that is parallel to the symmetry axis of axial cross section.Adopt the compare permanent magnet (as the side to axle center radial mode and buffed top) of other structures of the permanent magnet of parallel sided to have the advantage of following aspect: the permanent magnet external magnets surface of parallel sided is littler than the angle of inside, be convenient to mould molding and save material, reduced manufacturing cost; Has minimum relatively motor line to 5 of the back electromotive force of line
St, 7
StThe amplitude of harmonic component more distributes magnetic potential of air gap near sine curve.
As shown in Figure 6, the rotor permanent magnet 200c of present embodiment adopts oblique electrode structure, and promptly every rotor permanent magnet body tilts to cover the rotor core surface, with axial angled α, general near etc. the distance of same slot pitch, determine between 8 °-13.2 °.Help to suppress the torque ripple that static teeth groove reaction produces like this.
As shown in Figure 7, the similar and stator core of rotor core 200a, its each section lamination (silicon steel sheet) rotates an angle beta in turn equally, and to reduce the teeth groove harmonic wave moment pulse wave that iron core magnetic conductance anisotropy causes moving to reach.
As shown in Figure 8, the two magnet ring transducers of binary channels, interior circumpolar logarithm is 1: 6 with the ratio of outer shroud number of pole-pairs.The speed ratio of present embodiment can reach 6000, can improve the control precision of brushless electric machine and can be coupled the torque disturbance that minimizing electric current odd harmonic causes with control circuit.
Present embodiment adopts stator, the rotor structure of high length-diameter ratio, to reduce rotor moment of inertia; Adopt the wrong sheet of stator core, no rivet is fixed, and oblique magnetic of rotor and parallel side structure are to reduce teeth groove harmonic wave torque fluctuations; Adopt distributed short-chord winding, suppress the fluctuation of odd harmonic moment; Adopt the two magnet ring hall element sensors of non-contact type binary channels, improve control precision and speed ratio, and reduce the torque fluctuations that the electric current odd harmonic causes.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (5)
1. automobile electric power-assisted steering brushless, permanently excited direct current motor, by stator, the end cap of fixedlying connected with stator, be supported on the rotor in stator and the end cap, and the signal magnet ring and the position transducer composition that is fixed on end cap that are fixed on the rotor external part, it is characterized in that: the permanent magnet of described rotor is predetermined oblique angle vertically; The Width two sides of described permanent magnet are parallel to each other, and about its geometric center symmetry; The direction of magnetization of described permanent magnet is the parallel magnetization that is parallel to the symmetry axis of axial cross section.
2. according to the described automobile electric power-assisted steering brushless, permanently excited direct current motor of claim 1, it is characterized in that: described predetermined angular for 8 °-13.2 ° of the axial angles that same slot pitch distance such as becomes.
3. according to the described automobile electric power-assisted steering brushless, permanently excited direct current motor of claim 2, it is characterized in that: described stator by stator cage, be fixed on stator core in the stator cage, be wrapped in the stator winding on the stator core, the phase line inserted sheet of being drawn by stator winding constitutes.
4. according to the described automobile electric power-assisted steering brushless, permanently excited direct current motor of claim 3, it is characterized in that: described stator core segmentation lamination, and tropometer is decided angle in turn, and described meter is decided angle and equaled 360 divided by number of stator slots or 360 and the common divisor of number of stator slots.
5. according to the described automobile electric power-assisted steering brushless, permanently excited direct current motor of claim 4, it is characterized in that: described transducer is the two magnet ring transducers of binary channels, and interior circumpolar logarithm is 1: 6 with the ratio of outer shroud number of pole-pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074206 CN2935612Y (en) | 2006-06-22 | 2006-06-22 | Electric power-assisted steering permanent-magnet brushless DC motor for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074206 CN2935612Y (en) | 2006-06-22 | 2006-06-22 | Electric power-assisted steering permanent-magnet brushless DC motor for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2935612Y true CN2935612Y (en) | 2007-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620074206 Expired - Fee Related CN2935612Y (en) | 2006-06-22 | 2006-06-22 | Electric power-assisted steering permanent-magnet brushless DC motor for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2935612Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010124624A1 (en) * | 2009-04-30 | 2010-11-04 | 浙江关西电机有限公司 | Integrated hub motor and control method thereof |
| CN102340195A (en) * | 2010-07-29 | 2012-02-01 | 山西佳意新能源汽车有限公司 | Rotor of direct current motor |
| CN103219851A (en) * | 2013-05-14 | 2013-07-24 | 山东理工大学 | Motor for automobile idle-free system |
| CN104410177A (en) * | 2014-07-08 | 2015-03-11 | 顾明 | Stator, corresponding brushless direct current motor and three-phase switch reluctance motor |
| CN104917349A (en) * | 2015-07-08 | 2015-09-16 | 福建亚南电机有限公司 | Power-assisted steering high-efficiency high-reliability self-cooling permanent-magnet synchronous motor especially for new energy automobile |
| CN110249503A (en) * | 2016-12-01 | 2019-09-17 | 维迪科研究所 | Motor including angled inner permanent magnet type rotor |
-
2006
- 2006-06-22 CN CN 200620074206 patent/CN2935612Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010124624A1 (en) * | 2009-04-30 | 2010-11-04 | 浙江关西电机有限公司 | Integrated hub motor and control method thereof |
| CN102340195A (en) * | 2010-07-29 | 2012-02-01 | 山西佳意新能源汽车有限公司 | Rotor of direct current motor |
| CN103219851A (en) * | 2013-05-14 | 2013-07-24 | 山东理工大学 | Motor for automobile idle-free system |
| CN103219851B (en) * | 2013-05-14 | 2015-03-11 | 山东理工大学 | Motor for automobile idle-free system |
| CN104410177A (en) * | 2014-07-08 | 2015-03-11 | 顾明 | Stator, corresponding brushless direct current motor and three-phase switch reluctance motor |
| CN104410177B (en) * | 2014-07-08 | 2017-06-16 | 顾明 | A kind of stator and its corresponding brshless DC motor and three-phase switch reluctance machine |
| CN104917349A (en) * | 2015-07-08 | 2015-09-16 | 福建亚南电机有限公司 | Power-assisted steering high-efficiency high-reliability self-cooling permanent-magnet synchronous motor especially for new energy automobile |
| CN110249503A (en) * | 2016-12-01 | 2019-09-17 | 维迪科研究所 | Motor including angled inner permanent magnet type rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20130622 |